Discolored spot on buttplug

Hi,

I've recently bought my first sillicone buttplug and since a couple of days a little (round) discolored spot (a little lighter color than the rest of the buttplug) appeared on it.

Does anyone know what this could be and if I can still safely use it?

Thanks in advance!

Did you use silicone lubricant with it?

NatandTom wrote:

Did you use silicone lubricant with it?

Nope, I only used the water based oil that came with it and it's only 1 little spot that's got discolored (to dark gray), the rest is still the same (black).

Has it been stored resting on something?

We had a dildo stained by a harness, :-(